Mexico

$106+ Cheap flights from Ontario (ONT) to Mexico

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MEX
May 7 — May 141
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Cheap flight deals from Ontario to Mexico

Cheapest flights from Ontario to Mexico
Explore the most affordable flight options available from Ontario to Mexico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 7, 2026.

This Frontier deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1712:59 am
ONT
-
CUN
1 stop11h 40m
Frontier
Sat 4/2512:01 pm
CUN
-
ONT
1 stop12h 36m
Frontier
Deal found 4/3$270
This CheapOair deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1812:55 am
ONT
-
CUN
1 stop12h 33m
Multiple Airlines
Sat 4/2512:01 pm
CUN
-
ONT
1 stop12h 36m
Multiple Airlines
Deal found 4/3$277
This Mytrip deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/159:36 pm
ONT
-
CUN
1 stop12h 18m
Multiple Airlines
Thu 4/231:01 pm
CUN
-
ONT
1 stop12h 54m
Multiple Airlines
Deal found 4/2$279
This Trip.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/209:36 pm
ONT
-
CUN
1 stop10h 19m
Multiple Airlines
Thu 4/231:01 pm
CUN
-
ONT
1 stop12h 54m
Multiple Airlines
Deal found 4/6$283
This Mytrip deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/149:36 pm
ONT
-
CUN
1 stop12h 18m
Multiple Airlines
Sat 4/2512:01 pm
CUN
-
ONT
1 stop12h 36m
Multiple Airlines
Deal found 4/3$284
This Trip.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1812:55 am
ONT
-
CUN
1 stop8h 59m
Multiple Airlines
Thu 4/231:01 pm
CUN
-
ONT
1 stop12h 54m
Multiple Airlines
Deal found 4/5$285
This Trip.com deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/99:36 pm
ONT
-
CUN
1 stop12h 18m
Multiple Airlines
Thu 4/163:54 pm
CUN
-
ONT
1 stop17h 37m
Multiple Airlines
Deal found 4/2$292
This CheapOair deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1812:55 am
ONT
-
CUN
1 stop10h 46m
Multiple Airlines
Tue 5/261:14 pm
CUN
-
ONT
1 stop20h 21m
Multiple Airlines
Deal found 4/6$293
This Mytrip deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/712:40 pm
ONT
-
SJD
Nonstop2h 26m
Volaris
Thu 4/94:02 pm
SJD
-
ONT
Nonstop2h 25m
Volaris
Deal found 4/3$294
This CheapOair deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2112:40 pm
ONT
-
BJX
Nonstop3h 07m
Volaris
Tue 4/288:43 am
BJX
-
ONT
Nonstop3h 17m
Volaris
Deal found 4/2$297
This Gotogate deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/512:40 pm
ONT
-
SJD
Nonstop2h 26m
Volaris
Mon 4/64:02 pm
SJD
-
ONT
Nonstop2h 25m
Volaris
Deal found 4/2$299
This Frontier deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1612:59 am
ONT
-
CUN
1 stop11h 40m
Frontier
Wed 4/2210:13 am
CUN
-
ONT
2 stops24h 11m
Frontier
Deal found 4/2$300

Find flight deals from Ontario to Mexico

Keep the following information in mind while searching for Ontario to Mexico flight deals. Data was last updated April 7, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$270
(Frontier)

One-way from

$106
(iWofly)

Popular in

December

Cheapest in

September

Average price

$400

Good round-trip deal

$176 or less

Good one-way deal

$44 or less
Provider with most accurate pricing for Los Angeles-Mexico City Benito Juarez flight deals.
Provider most trusted by Cheapflights users for Los Angeles-Mexico City Benito Juarez flights.
From Ontario to Mexico
One-way flight from Ontario to Mexico
Highest demand for flights based on searches. 10% potential increase in price ($46 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
Average for round-trip flights in April 2026
Price to beat on a round-trip flight from Ontario to Mexico.
Price to beat on a one-way flight from Ontario to Mexico.

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Mexico that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 7, 2026.
Use the filters below to find and compare flights from Ontario to Mexico that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMexico City

ONT - MEX

ONTMEX

Ontario

Tue 6/30

9:36 pm-9:45 am

1 stop11h 09m

Mexico City Benito Juarez

Sun 7/5

4:35 pm-11:05 pm

1 stop7h 30m

$358

OntarioOaxaca

ONT - OAX

ONTOAX

Ontario

Tue 5/5

9:36 pm-8:35 am

1 stop9h 59m

Oaxaca Xoxocotlan

Tue 5/12

2:28 pm-7:46 pm

1 stop6h 18m

$364

OntarioLeón

ONT - BJX

ONTBJX

Ontario

Thu 4/23

5:10 am-7:31 pm

2 stops13h 21m

León Del Bajio

Tue 4/28

2:50 pm-9:50 pm

1 stop8h 00m

$377
Quickest round-trip

OntarioLeón

ONT - BJX

ONTBJX

Ontario

Thu 4/30

12:40 pm-4:47 pm

Nonstop3h 07m

León Del Bajio

Sat 5/9

8:43 am-11:00 am

Nonstop3h 17m

$403

OntarioLa Paz

ONT - LAP

ONTLAP

Ontario

Fri 5/1

9:36 pm-4:39 pm

2 stops19h 03m

La Paz Leon

Fri 5/8

3:31 pm-11:05 pm

1 stop7h 34m

$409

OntarioLa Paz

ONT - LAP

ONTLAP

Ontario

Mon 6/1

12:55 am-4:35 pm

2 stops15h 40m

La Paz Leon

Sat 6/6

3:31 pm-11:05 pm

1 stop7h 34m

$415

OntarioLeón

ONT - BJX

ONTBJX

Ontario

Fri 5/8

9:36 pm-9:15 pm

3 stops22h 39m

León Del Bajio

Tue 5/26

8:43 am-11:00 am

Nonstop3h 17m

$415

OntarioOaxaca

ONT - OAX

ONTOAX

Ontario

Sun 4/19

12:55 am-8:35 am

1 stop6h 40m

Oaxaca Xoxocotlan

Sat 4/25

2:28 pm-11:05 pm

1 stop9h 37m

$417

OntarioLa Paz

ONT - LAP

ONTLAP

Ontario

Wed 5/6

9:36 pm-6:32 pm

3 stops20h 56m

La Paz Leon

Wed 5/13

3:31 pm-11:05 pm

1 stop7h 34m

$421

OntarioLeón

ONT - BJX

ONTBJX

Ontario

Wed 6/17

12:55 am-6:14 pm

2 stops16h 19m

León Del Bajio

Sat 7/18

8:43 am-11:00 am

Nonstop3h 17m

$421

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/4

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Ontario to Mexico

Have a flexible travel schedule? Discover the best time to fly to Mexico from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Mexico

What is the cheapest month to book a flight from Ontario to Mexico?

Currently, April is the cheapest month in which you can book a flight from Ontario to Mexico (average of $44). Flying from Ontario to Mexico in December is currently the most expensive (average of $161). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to MX?

Find hourly flight availability from Ontario to Mexico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 7, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Mexico as you normally would.

How often are flights from Ontario to Mexico delayed?

About 13% of weekly flights between Ontario and Mexico have experienced delays in the past year, with the average delay time being 121 minutes.

What is the most punctual flight time for Ontario to Mexico flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Ontario to Mexico flights?

Over the last year, Volaris have had the lowest number of delays on this route, with just 13% of flights being delayed.

Reviews of airlines servicing Mexico

Get insights into the airlines that provide service to Mexico. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Mexico. Reviews last updated April 7, 2026.
Get a feel of what it's like to fly with Southwest,United Airlines, andAmerican Airlines from Ontario to Mexico by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Mexico. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from Ontario to Mexico?

    For a flight from Ontario to Mexico, you will be flying from Ontario. Ontario (ONT) is just 3.1 mi from the center of the city.

  • How long is the flight from Ontario to Mexico?

    There are many flights that can get you from Ontario to Mexico in 6h 43m. Fly via Frontier, Volaris, or United Airlines to get the fastest option. The distance from Ontario to Mexico is about 1927 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Ontario to Mexico?

  • Can I find deals for flights from Ontario to Mexico that include hotel bookings?

    Yes. In addition to deals on Ontario to Mexico flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Mexico?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Mexico.

  • Can I find deals for business class flights from Ontario to Mexico?

    Yes. Cheapflights offers flight deals from Ontario to Mexico by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Mexico?

    Currently, April is the cheapest month in which you can book a flight from Ontario to Mexico (average of $44). Flying from Ontario to Mexico in December is currently the most expensive (average of $161). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ontario to Mexico

See prices for flight routes from nearby airports that may be better suited for you.

Top 8 airlines flying from Ontario to Mexico

Discover the top 8 airlines that operate flights from Ontario to Mexico. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
VolarisCheapest$107Average$346FlexibilityNo cancel feeOn-time79%
FrontierCheapest$167Average$405FlexibilityNo cancel feeOn-time62%
VivaCheapest$172Average$367FlexibilityNo cancel feeOn-timeN/A
AeromexicoCheapest$179Average$366FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$191Average$447FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$208Average$435FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$310Average$619FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$312Average$570FlexibilityNo cancel feeOn-time63%

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